Summary

Mine Type	Underground
Study Completed	Prefeasibility
Commodities	Coal (metallurgical)
Mining Method	Room-and-pillar Continuous
Project Timeline	...
Mine Life	...
Snapshot	The Mon Valley property is comprised of three separate reserve holdings, namely, the Pangburn, Shaner and Fallowfield proposed underground mines in the Upper Freeport seam. Mon Valley is capable of producing primarily a High-Vol Met coal. The three mines have been projected to operate independently, with producon inially beginning at Pangburn. Shaner is projected to come online as replacement producon for Pangburn, and Fallowfield represents expanded Mon Valley producon aer Pangburn is in full producon. In addion to the individual mine/plant sites, a barge loading dock on the Monongahela River adjacent to the Pangburn site is proposed and will be used to ship clean coal for all three mines. Each mine site will include a coal preparaon plant and all necessary surface facilies. Under current mine development plans, production would begin at the Pangburn mine in 2034, followed by the Shaner mine in 2040 and, finally, the Fallowfield mine in 2059.

Deposit type

• Sedimentary

Summary:

The property lies in the Northern Appalachian Coal Basin within the Appalachian Plateau physiographic province.

Future operations at the Mon Valley properties will extract the Upper Freeport coal seam, which covers large areas of Pennsylvania, Ohio, Maryland, and West Virginia. The Upper Freeport seam is situated at the top of the Allegheny Group of the Middle Pennsylvanian period (307–315 million years ago). The top of the Upper Freeport seam is commonly used as the marker between the top of the Allegheny Formation and the overlying Upper Pennsylvanian Conemaugh Group. The Allegheny Formation consists of laminated cyclothemic sequences of coal, shale, limestone, and clay. The Upper Freeport seam generally lies around 183 meters below the Pittsburgh seam.

The primary structural controls on the Upper Freeport coal basin are localized syn-depositional anticlines and synclines that directly influence the accumulation of peat bogs. These structures create gently folded and rolling coal strata. The axes of the Waynesburg and Port Royal (Irwin) synclines pass through the central and eastern portions of the properties with a trend and dip to the northeast. The Amity, Murrysville, and Belle Vernon anticlines (listed from west to east) are located in the central and western portions of the properties. These anticlines often coincide with thicker coal seams where peat accumulated in domes along the anticlinal crests. It is understood that local anticlines represent the upthrown side of syn-depositional active deep faults.

Conversely, fluvial channel sediments were deposited on the structural downthrown side within synclines.

Within the Pangburn, Shaner, and Fallowfield mine-plan areas, the Upper Freeport seam typically lies between 183 meters and 335 meters below the ground surface.

The shaft depths at the projected locations for the Shaner and Fallowfield shafts range from approximately 232 meters to 268 meters.

The coal to be produced at the Mon Valley Complex is typically high volatile (>31% volatile matter) bituminous coal.

The three proposed mines (Pangburn, Shaner, and Fallowfield) are all projected to be deep mines in the Upper Freeport seam. Mining is planned in areas where the total seam thickness exceeds 1.2 meters.

The Upper Freeport seam thickness in the projected areas ranges from 0.7 meters to 3.1 meters, averaging 1.95 meters.

Mining Methods

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Comminution

Crushers and Mills

Processing

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Commodity Production

Personnel

Job Title	Name	Profile	Ref. Date
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